XP Synthesiser in FTB StoneBlock 4
FTB StoneBlock 4 1.23.0 ships version 1.0.3 · First seen in 1.0.0
XP Synthesiser is a mod in FTB StoneBlock 4 1.23.0, where it is version 1.0.3. XP Synthesiser is a mod that lets you synthesise XP from power. The main goal of this mod is to provide those on multiplayer and singleplayer with a simple, lag-less alternative to mobfarms that provides solely experience. (Summary from the mod's Modrinth page.)
XP Synthesiser guide for FTB StoneBlock 4
Last verified for FTB StoneBlock 4 v1.23.0 on Oct 15, 2026 · text last changed Oct 15, 2026
- Sections
- 6
- Recipes shown
- 2
- Items named
- 7
Every recipe and number here was checked against FTB StoneBlock 4 1.23.0, read from the running game on Oct 13, 2026.
What is XP Synthesiser?
XP Synthesiser is part of this pack. The pack ships version 1.0.3 of the mod (file xp_synthesiser-1.0.3.jar), and it was already included in this pack version or an earlier one.[1]
Unverified The sources I have don't describe what XP Synthesiser does, its recipes, its configs, or who it is best suited for, so I can't explain its mechanics here. There is also no confirmed information about where it fits in this pack's progression, and no quest or ATM Star path connection has been found for it. Check the mod in-game before relying on any details.
How do you get started with XP Synthesiser?
1 part
Welcome to XP Synthesiser in this pack! The only thing the pack's recipe data confirms for this mod is the Kill Recorder, so that's where you start.[2]
Step 1: Craft the Kill Recorder
The pack adds its own shaped recipe for the Kill Recorder through a script, so follow the recipe below rather than anything you remember from other modpacks or the mod's defaults.[2]
Shaped (kubejs)
Recipe id: ftb:xp_synthesiser/kill_recorder
This recipe is added by the pack, so check it here for the exact ingredients and layout.
It's the only XP Synthesiser item with a pack recipe in the sources, which makes it the natural first thing to craft.[2]
Unverified What the Kill Recorder does, how it fits with the rest of XP Synthesiser, and what to craft after it are not shown in the sources here. No quests in this pack involve the mod, and no guidebook or item descriptions were available, so test it in your own world before building around it.
How does XP Synthesiser work?
3 parts
The sources for this mod are thin: there's no in-jar guidebook and no tooltips. What we can confirm comes from the pack's server config and one recipe, so this section is short and sticks to what's verified.[2][3]
Power
The XP Synthesiser needs power in this pack, because general.requiresPower is set to true. That option exists so a pack can turn the power requirement off, but here it stays on.[3]
How the cost of a recording is calculated
The config describes the XP cost as a base cost plus a scaling cost. The scaling part mostly hits big recordings. Three options control it, and the pack leaves all of them at the mod's defaults:[3]
- general.xpPointCost is 10,000. It sets the base cost, which applies equally to small and big recordings.[3]
- general.xpScalingCost is 100,000. It affects the scaling costs, mostly for big recordings. Doubling it doubles the scaling cost.[3]
- general.xpScalingFactor is 3. It's an exponent that greatly influences the scaling cost, and the allowed range is 2 to 10. A value of 2 means no scaling cost at all.[3]
Kill Recorder
The pack adds its own recipe for the Kill Recorder through KubeJS. It's a shaped recipe, so the layout below is what you'll use in this pack.[2]
Shaped (kubejs)
Recipe id: ftb:xp_synthesiser/kill_recorder
Unverified The sources don't explain how the Kill Recorder is used, how recordings are made, what the machine's multiblock or structure looks like, how much power it draws, or how to automate it with items or fluids. Treat all of that as unconfirmed until it's checked in-game.
How do you progress through XP Synthesiser?
2 parts
There isn't a long tier ladder to climb here. The sources for this pack only confirm one thing about XP Synthesiser progression: the Kill Recorder has a custom recipe added by the pack itself, so you can't assume the mod's default recipe applies.[2]
Kill Recorder
The pack adds this recipe through KubeJS as a shaped recipe. Here is the exact in-pack version:[2]
Shaped (kubejs)
Recipe id: ftb:xp_synthesiser/kill_recorder
This is the pack's own shaped recipe for the Kill Recorder, added through KubeJS, not the mod default.
What isn't confirmed
Unverified The sources here do not show any quest-guided order, further tiers or upgrades for XP Synthesiser, so this guide cannot say how the rest of the mod fits into the pack's progression. Only the Kill Recorder recipe is confirmed.
How does XP Synthesiser work with other mods?
2 parts
In this pack, the links between XP Synthesiser and other mods come from recipes the pack added itself. Each one uses items from other mods, so they are worth knowing before you plan your setup.[2]
Kill Recorder
The Kill Recorder is crafted with a pack-added shaped recipe. Besides the vanilla Copper Ingot and Redstone, it needs a Primordial Assembly, so getting a Kill Recorder depends on an item from another mod.[2]
Shaped (kubejs)
Recipe id: ftb:xp_synthesiser/kill_recorder
This shaped recipe is added by the pack.
World Engine recipe
The pack also adds a Custom Machinery recipe with the id ftb:world_engine/xp_synthesiser. It lists XP Synthesiser together with Empowered Emeradic Crystal and Block of Cognitive Crystal. That puts the machine in the same recipe as items from other mods.[2]
Custom Machine (custommachinery)
Recipe id: ftb:world_engine/xp_synthesiser
Added by the pack and run in a custom machine, not a crafting table.
Which XP Synthesiser config options matter?
2 parts
All of the XP Synthesiser's settings live in one server-side file, and there are only four options. Good news: they're easy to understand, and this pack leaves the cost settings at the mod's own defaults.[3]
Power requirement
general.requiresPower is set to true in this pack, so the XP Synthesiser needs power to work. The source doesn't list a mod default for this option, so I can't tell you whether the pack changed it.[3]
Cost settings
Three options control how much XP a recording costs. In this pack all three match the mod defaults, so nothing here was changed.[3]
- general.xpPointCost is 10,000 (the same as the mod default). It sets the base cost, which applies equally to small and big recordings. It must be above 0.[3]
- general.xpScalingCost is 100,000 (the same as the mod default). It sets the scaling cost, which applies mostly to big recordings. Doubling it doubles the scaling cost. It must be above 0.[3]
- general.xpScalingFactor is 3 (the same as the mod default). It is an exponent for the scaling cost and can range from 2 to 10.[3]
Sources
- FTB StoneBlock 4 1.21.0 mod list · pack file
- FTB StoneBlock 4 1.21.0 recipe dump: recipes making XP Synthesiser items · pack recipe dump
- FTB StoneBlock 4 1.21.0 config: config/xp_synthesiser-server.toml · pack file
Where this guide comes from
Written from what FTB StoneBlock 4 itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.
Guide last verified Oct 15, 2026.
Report wrong info
Version in each release
48 releases, first in 1.0.0
| FTB StoneBlock 4 | Version | Jar | Where it came from |
|---|---|---|---|
| 1.23.0 Oct 12, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.22.0 Sep 22, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.21.0 Sep 9, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.20.1 Sep 1, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.20.0 Aug 26, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.19.1 Aug 12, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.19.0 Aug 11, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.18.0 Aug 9, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.17.2 Jul 29, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.17.1 Jul 28, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.17.0 Jul 24, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.16.0 Jul 2, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.15.3 Jun 17, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.15.2 Jun 16, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.15.0 Jun 13, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.14.2 Jun 3, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.14.1 May 31, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.14.0 May 27, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.13.1 May 12, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.13.0 May 12, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.12.0 May 7, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.11.1 Apr 24, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.11.0 Apr 16, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.10.0 Apr 8, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.6 Apr 3, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.5 Apr 1, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.4 Mar 25, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.3 Mar 23, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.1 Mar 19, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.9.0 Mar 17, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.8.1 Mar 11, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.8.0 Feb 10, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.7.3 Feb 3, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.7.2 Feb 3, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.7.0 Jan 30, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.6.0 Jan 7, 2026 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.5.0 Dec 16, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.4.0 Dec 9, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.3.0 Dec 4, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.2.1 Nov 26, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.2.0 Nov 25, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.1.2 Nov 18, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.1.1 Nov 17, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.0.8 Nov 6, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.0.7 Nov 4, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.0.3 Nov 1, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.0.1 Oct 30, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
| 1.0.0 Oct 29, 2025 | 1.0.3 | xp_synthesiser-1.0.3.jar | From the published release |
"From pack files" means the list came from the pack's own files; "from the published release" means ForgeBase read the jars of the release itself.
Items and blocks
2 items from the 1.23.0 recipe dump.
Config options (how FTB StoneBlock 4 sets them)
4 settings shipped in the pack's config files; 0 differ from the mod's documented default.
Show settings
| Setting | FTB StoneBlock 4 value | Mod default |
|---|---|---|
general.requiresPower Whether or not the XP Synthesiser needs power config/xp_synthesiser-server.toml | true | not documented |
general.xpPointCost Affects base cost, which applies equally to small and big recordings config/xp_synthesiser-server.toml | 10000 | 10000 |
general.xpScalingCost Affects scaling costs, which applies mostly to big recordings. Doubling this doubles scaling cost config/xp_synthesiser-server.toml | 100000 | 100000 |
general.xpScalingFactor Scaling factor as an exponent. GREATLY influences scaling cost. 2 means no scaling cost config/xp_synthesiser-server.toml | 3 | 3 |
Which FTB StoneBlock 4 mods work with XP Synthesiser?
The FTB StoneBlock 4 mods that share the most recipes with XP Synthesiser. Highlighted ones have a guide.
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